Tires or wheels out of balance?
A little vibration is normal when your doing 70. But if there's quite a bit, you may have an unbalanced tire.
I am assuming its your car that you are driving. Your wheels or axle could be out of alignment.
Possibly a wheel out of balance
50-70 each
What is the normal rpm for a grand vitara 2002 Suzuki
70 km/h = 43.5 mph
Out of balance tires, bad u joints, out of balance drive shaft, out of balance wheels. Gremlins.
balance or tires or brake rotors out of round front wheel drive cv axles
Two sizes were used, P195/65-R15 & P195/70-R14
check cv axles.
70 mph = 60.8 knots.
I would suspect a tire out of balance. Have your tires balanced and see if it goes away.